Comment by theoldgreybeard

I've had to fix so many errors over the years due to string/symbol mismatch in function calls and/or hash access, and never once have I benefited from the extra optimizations that the guaranteed singular allocation of symbols have given me where I wasn't able to get the same benefit from a frozen string literal.

If it was up to me I'd get rid of them, but I know I have an unpopular opinion and it's really only a thought experiment.